condition mean min max 0 h after light 6.94602 6.8606 7.03144 4 h after light 5.161025 4.89102 5.43103 8 h after light 9.096150000000002 8.0928 10.0995 4 h after dark 13.578949999999999 12.8527 14.3052 8 h after dark 11.7427 11.531 11.9544 12 h after dark 6.61406 6.11354 7.11458